For three Saturdays in August, the sounds of honking horns and idling delivery trucks give way to the gentle footfalls of pedestrians and the ring-a-ding-ding of bicycle bells. From 7am to 1pm, a corridor connecting Brooklyn Bridge to Central Park—long stretches of Lafayette Street and Park Avenue, and a few connecting streets—will be closed to motor vehicles and open to the public for biking, strolling, dancing and aimless peregrinating. There are also "rest stops" along the way, offering activities and entertainment galore—musical performances, a water slide, bicycling, a climbing wall and a 165-foot zip line.